validation of JSON path count using robot framework

{
  "schemas": ["urn:hid:scim:api:idp:2.0:Authenticator"],
  "policy": {"value":"AT_CUSTOTP"},
  "status": {
    "status": "ENABLED",
    "expiryDate": "2018-05-15T18:15:21+0000",
    "startDate": "2015-05-15T18:15:21+0000"
  },
  "owner":{
    "value":"${#TestSuite#userID}"
  }
}